Cooking apparatus.



P. v. DETWILER. COOKING APPARATUS.

APPLICATION FILED 0OT.2,1911.

1,1 19,579. Patented Dec. 1,1914.

SHEETS-SHEET l.

E'. V. DETWILER.

l COOKING APEARATUS. APPLICATION FILED 011122.11111.

Patented Dec. 1, 1914 8 SHEETS-BHEBT 3.

GOQKNG APPARATUS. APPLCATIOH NEED CUTIE', 1911. 1,1 1 9,579, @amm Dee. 1,1914.

6 SHEETS-SHEET 4.

. 4, J. n fmi, A A .Lm IT h ..1 M 1 H F. V. DETWLER.

COOKING APPARATUS.

APPLICATION FILED 0CT.2,1911

1,119,579; yatend De@ 1,1911

0 SHEETS-*SHEET 5.

l n n F. V. DBTWILBR.

GGOKING APPARATUS APPLICATION FILED 0GT.2,I1911 1,1 19,579 Patent-,ed Dee. 1, 1914.

8 SHEETS-SHEET 6.

w W #gf/WM cuisine ein. f

FOREST BETWILEE, F? CEE;

eenzame 1,119,539, specimen@ mi meer@ saisie. Application :tiled october 2, Ulli.

To all whom t may concern the Be it hewn that I, Formen* V'. Dmwmni, one a citizen of the United States, residing et spectiv Chicago, in county -oi" Cook and State of for son Illinois, have invented certain new and usereceivin ful Improvements in Cooking Apparatus, of Citu which the following is ay specification. ing c il This invention relates to impovements in Fie. perspective view cooking apparatus and n'ioie particularly to of the heating pistes; Fig. is' that type lmovvn as heat retaining eoolperspective viewo top of the protecters, which the articles to be "cooked are ing plate for one of the cocking con-loert` initially heated, and the heat thus generated nient-s; `Eig. llis a detail 'perspective i in the articles is conined'in the casing to of one end of one of the frames oi' casi complete the cooking operation, and one'oi3 which' surround and ieceive the cool, n. n

the objects ci the ypresent invention, is to chamlcci's; Figs. 15, 16, 1g and 18 are e.

' roi/'ide :in im roved a aratus of'this class ler ed sectional views showin@ details el? P e having means whereby the heet may be obconstruction.

vtained by heating apparatus located Within thecasing or hyineens of heating plates, which lattes-ore first heated end then placed in the eesin A' fuither object of the invention is te provide an improved apparatus of its class, having cooking chambers which may be readily removed from the casing for clean- Refeiiing mene pe'ticulaz'ly vto the f ings and in the pisse-.nt exemplitiee this invention, the numeral 2O d generally inciosing W i ri ported upon suitable legs 2l. This cash/f may he of any desired size and configuration, und may he constructed of suitable terial, but in 'the piesent exempliiicntion of ing 20m13.053s, A the invention, it 's shown as being; of a A further obgect is to provide en improved rectangular ecni'iguiation, having door ogen appestus of tais class having means for ings in the' side thereof xviii-en closures 22,

catching and confining any vapor which closed by suitable and may escape from the 1cooking compartment, openings and cicsuies 9.2 ere lo and conveying the vapor to the outside of erabl-y adjacent the ends of th the casing end condensing the seme. form e space thezeloet/"eee en A further object is to provide en improved space is ai'range'd @closure fr apparatus of this class, Wliiclinvill he simple, forms e portion of the top oi ythe diunble and cheap in construction and ei is provide-d with suitable .'fzisteniim` fective and elicient in operation. While the closure" pioi'ded of To the attainment of these ends, and the suitable fastening devices accomplishment of other new and useful ob- Any suitable number o ovens ci' cooking jects, as Wil'lappear, the invention consists compartments muy be arranged Within this si in the features of novelty in substantially the construction, combination and arrange ment of the several parts hereinafter more fully described and claimed and shown .in the accompanying drawings eXeinpiivi'r.` the invention, and in which*- Figure l is a perspective View of zui'fn proved apparatus ci this class, construct@ in 3com-lance with the principles/ei this in casing, and in the present exempliicstion ci this invention, three are shown, one adjacent each" of the closures 22,1liro1igh which access may he had to the ovens or cechi. compartments, and one intei'inedinte two shove iefeii'ed to, to the intei'ioici' which lutter access may be had through the opening closed 'by the closure in 'the present exeniplificeiien of the invention,

.ventiong Fig. 2 is a vertical longitudinal construction of eaeli of the end ovens'er '10 sectional view; Fig. 3 is n dingrumumtc ccmpnitnients is the saine, and therefore vieu'A of an electric heating system L; Figi. i spcciic description'o one. will tmpl? equally is zsecticnnl view .mi line 4 4, Fig. 2; Fig. as well to both. I v 5 is n secticnal view on line Fig. 2; .1-ranged 'within the using 20, adjacent Fig-. 6 is n horizontal sectional view on line gli o( ine openings closed ov the closui'es Hi Q f5, Fig'. Byligr. 7 1s a perspective V 22, is n fiume or casing designated genei'allv one ci: the ".oolrg chan" is by the reference numeral 2G, which is of any desired size and conligurationpreferably of rectangular cross section, and 1s constructed of any suitable material, preferably sheet material, such as metal or the like,` and is oi a size substantially equal to the area of the openings closed by the closure f2.9; This casing 26 is placed into thecasi'ng l from the rear thererf and before the back 27 is secured in place. The casing is provided adjacent its forward edge 28 with -a lateral projecting circumferential flange 29, Whichlatter projects any desired distance beyond the outenac'e of. the casing and is of such a size that when the casing 26 is inserted in the outer casing, the edge 28 thereofivill project into the door opening in the front of the casing, while the circumferential flange 29 will engage and rest against the inner face of the front Wall of the outer casing. When thus inserted, the casing 26 is held in position in any desired or suitable manner, preferably by means of fastening devices 30 passing through the flange 29 and into the Jfront Wall of the inclosing casing. 1f desired, suitable material 3l, such as asbestos, mineral Wool or the like may be provided, which is inserted between the flange 29 and the adjacent edge of the door opening. The casing 26 is pro -vided adjacent its forward end with a circumferential groove or recess opening through the outer face. or" the casing to form a shoulder 33 (see Fig. 6) :tor a purpose to beghereinafter set forth. Filler blocks 34 are provided, which are inserted into the groove 32 for reinforcing or strengthening that portion et the casing. The casing is of such a length that it will terminate short of the rear wail Qi' of the outer or inclosing casing, and arranged between the casing Q6 and the Walls of the inclosing casing, is suitable heat insulating material S5, such as mineral Wool, asbestos, or the like, and if desired, ventilated or aerated in- "sulated material 36 may also be provided,

which is preferably arranged in contact with the outer face of the frame or casing 3G. Similar insulatinvmaterial is placed adjacent the rear WallJ 27 of the inclosing case..

Arranged Within the casing 26 is a c0oking compartment designated generally 'by the referencejnumeral 3.7, more clearly shown' in Fig. 7, which is of anydesired size and configuration, but is or' a size somewhat smaller than the interior of the casing 2G into which latter this compartment 37 is adapted to be inserted, and when thus inserted, the walls of the compartment will be spaced ltrom the walls of the casing to form a heated air passageway around the compartment 37. This compartment '37 is provided with flanges 38 on the forward edges et the sides and top, and the bottom 39 thereof is apertured as shown, to permit gnome heated air to passinto the compartment ment is inserted Within the casing 26, the flanges 38 will engage or abut the shoulders Ll() formed by the groove 32 in the casing, and by means of which the inward movement of the compartment 37 with respect to the casing 26, will be limited.

In order to hold the compartment properly spaced from the casing 2G, spacing members 41 are provided, Which are pret'.- erably secured to the side walls of thevcasing 26 by means of fastening tongues or projections 42 on the members 4l, which tongues pass through suitable apertures 4-3 in the Walls of the casing and are iianged down upon the outer face of the casing Wall 26, as shown more clearly in Fig. 1,8. These members 4-1 are provided With apertures or openings 44 therethrough, so as not to .form an obstruction for the heated air, and

through which apertures the heated air will4 pass. These members 4l are of a size to engage the Walls of the compartment 3T when the latter are in position. lt is not necessary to place these spacing members at the rear ot' the compartment 37, but if desired, theymay be employed. rhe Tfront of the compartment 37 is open and the shoulder formed on the casing 2 is solocated with respect to the outer face of the front of the inclosing casing 2O to form a space of some size therebetween, in which space is arranged a suitable door or closure 45, which latter is hinged as at 46 (see pan ticularly Fig'. 5). rfhis closure is insulated as shown, and is secured in its closed position by means of a fastening device 47 of any ordinary and Well known construction. The door is so mounted that when it .is loweredV into the position shown in dotted lines in Fig. 5; one face of the door will. substantially coincide with the bottom 39 of the through the bottom. When the comparh,

compartment 37, and thereby act as a support and guide for directing the article into the compartment. The side Walls of the compartment .30 are also provided with a series of apertures or openings 48, through which the heated air circulates, and heater plates or shelf-supports 49 are secured to the side Wallsv within the compartment 37 in any suitable manner, preferably in a. manner similar to the manner in which the spacing members 41 are secured in positicnf The spacing members 4:1 may also be secured to the topo the casing 26 so as-to engage the'v top of the compartment 37 and to forni a space between the tops of the casing and'v compartment, and into which space the vapor which passes from the compartment through the openin s 48, will accumulate.

in the operation of airing, it is necessary in'order to secure-the desired results, tojcon- Vey away substantially 'all lmoisture andl maintainthe heated air'asdgy las possible no, i

.receive their source of 31,1 rouvre F \compartment 37 and the casing 26 is prospace between the tops oi the casing 26 and compartment 27. On the outside oithe casing 2O is arranged a condenser '51, into which thev vapor is discharged from the passage 50 to be condensed,A and when con densed, the Water ot condensation will lovv out ot' the condenser 51 into a suitable receptacle 52 removably supported in any desired or suitable manner adjacent the discharge end of the condenser so as to be removed when filled with water and emptied and then replaced. The closure 22 is also provided Wit-li'suitable insulating: material .so that the heat will be retained in the inclosing casing.

'Heat may be supplied to ments 37 either by means of a heating appa ratus or heat generator located within the vcasing or by means of heating plates, 53, which are lirst heated and then placed. within the compartment. Il these heated plates 53 are employed, they are placed Within the compartment 37 either upon the bottom 39 thereof or upon the supports or both, and in order to permit these plates to be read` ily transported, lifter Vopenings oelare provided therein. ln order that the circulation of the heated air in the compartment 37 will not be interfered with, these heating plates 53 may be provided with out out portions 55 to form passages for the heated air. ln the present'exeinplilication' of this invention7 electric heating coils 56 are employed which supply of heating' fluid through the conductors :'37 leading from any suitable source. Any number ol these coils 56 mov be provided for each compartment and are arranged beneath the compartment 37 and between the latter and the casing 26. These coils 56 are themselves arranged Within a casing 58 havingn apertured Walls. The casing 58 is of a'size and conthe compartfiguration to lit within the space between the bottoms of the casing ments 37, and which space grooved or oil'set portions 3io'f the casingr 26. lter the casing 2G has heen placed Within the inclosiner `casing' in the ananner already described. the casing 58 containing the vcoils 56 is next placed within the casing.;` 2G preferably through the front thereof, after which the compartment 37 may be inserted. ln order to protect the conductors 57 where they/.extend through the inclosing casing, a suitable' conduit 59 may be"pro- 2G and compartis formed by the 'desired number of coilsy vor out or" 30 of the ordinary Well known type. These coils are preferably connected in parallel so that' any one or more of the cut oils 60 may be operatedto out oil the and by means of which the amount of heat may be controlled. .l`he coils 56 are preferably removably sen cured in position Within the casing 58, and :For this purpose, suitable supports 61 (see Fig. l0) have detachable engagementVff-/ith this irnproved construction, it will be'maniiest the compartments 37 may be readily removed from the casing 26 by simply opening the door 22 and lowering the door 4115, Ias shown in dotted lines in Fig. 5. flhe'door el is so constructed that when in this position, its inner face will notintri'ere with the ready removal ofthe einpartment 37 and in order to facilitate the ready removal `of this compartment, handles 62 are provided on the Walls of the compartment.

The oven which is arranged between the two end ovens and preferably substantially at the center of the inclosing casing, is or" a construction substantially similar to the others, with the exception that it opens' through the top of the casing, and comprises a casing (38 corresponding with the casing 26. This casing is oi" any desired conguration and size, but in th tion ot' the invention, 1s shown as being circular in cross section and of a height to er; tend substantially the entire height or the inclosing casing as shown more clearly in Fig. 2. This casing insulating niaterial'f disposed between the. bottom thereof and the bottom of the inclusing casing, and is preferably 'ofset as at 64; (see particularly Fig. 17) to form a supporting ledge and a filler 65, preferably of sheet insulatingv material is provided which engages lthe outer wall of the casing 63 to lill the space between the insulating niaterial 3G and thcjvall of the casing 63, which is formed by the bent back portion G6 of the upper end of the casing (33. A plate 67 (sec .particularly Fig. l) is provided for covering the opening into which the casing' G3 is arranged, and also for covering the insulating material surrounding the casing. This plate 67 is provided with a central iu'mrture G8 formed by cutting away a portion of -the plate and Hanging zr'portion oli the plate into the aperture to forni a series ci' steps or shoulders 6i) and 70. rlhe der licced portion of the v.plate (57 adjacent the shoulder 70, is ot' a size to i'it within the top of thc-casing 63 as shown more clearly in Pigs. 2 and 17, so as to" engage and rest upon .i l the shoulder and olset'portion 64 of the case present exeinplilican 63 rests upon suitable are provided with which the coils that c 'os, 11.: H, I; .voexieeezx t.

iejeeemge@ e dosare ,for @ne second "5 cooking eempemenu rezovle weging; eempernem; source ex supply es;

engaging tee oojeeo' ix; spese be Ween loe 'we-Qs of, ijle anoempare ment, seid eompatmen having an entrance i? opening' and e eterey @injecting flange suz'l'oundng euc opening, seid' erxge eingnging ever the pojecton formtmg the .nsel'on of the @amper ment :inte the easing, a `ceeuze ifo: ik@ opening in e casing, ancf. e sone-ce o suppy of initial ee,

5. a heee retaming cooking' eppmmals9 the eembneton of a hem insueed casing having en enezece openng, lez'e oeing pojeeon on ehe Wei?? the Casing e2:

35 tending exoun. the .msog ea projecting be e seperate tending. around the .competmenta ihe Wells of easing en i?. lin' e heele retaining coo'fnf' appemtlis, te'combnaton of a hef/. insueted easing hevngfen entrance opening, there being projectene on the Walle of the casing excasing and projecting `tuezen-e5 e cooking compartment removeai arranged within the casing wiijlr) its 1s engaging the projection 'to fom a space between the was of he casingfimyd the compartment being provie with openings forming coinmoimcaion between the interior of the compartment and the seid space, a cosre for: ehe' cesng-g;A and e source of suppy of nita having en' emmene opening; there being pojeefsoe Qen i-he wes of casxg eXeHdHgermm the casing and pro# jecng thereivn'eg. e Cooking eompar'ment 90 rerfoveby erenge wiin @he casing Wth 'e'ee engaging le projecion to fol-m e space between the wee of the easng am? eompermen. he'wals of ehe compartment heine' pevier with openings 'forming commxmieavon Eeween the interei ef the compel-@mem anc' he said epaee, menne for suppying heet to the comparment emi a' destare eeeng.

En e ae. reteinng cooking e'pmrsaus, he eombine'on of en inclosing easing hem ing', opening in one wal, a, secom easily ieleaeve''y eeeue within the rs :fecite having an opening in ene Weil iegs'ering "with the ret vseid epening, Ineens foroig seeone easing and speeing it fom the neesng easing, 1531-' sunting materiali cispose beween 'e was o1 'zhe eeengs, e eosue for' he secon@ recited easing, e cooking compartment removeby mounted' in the ater end means fof suppying heat to the compartment.

' meazieor ofing the cooking compartment compartment having openings more of its' wallsl les,

removably secured withih the first said cas-y ing and having an opening in one' wall registering with the first said opening, insulating material disposed between the walls of the casings, a closure for said openings, a cooking 'compartment removably Vsupported within the second recited casing, nieans fori holding the cooking compartment 'spaced from the walls of the adjacent casin'g and one or more electric heating coils removably disposed within the space between vthe casing and compartment, said in' one -or `forming communication between the interior of the compartment and the said space.

i1. naheat retaining cooking apparatus, the combination of a heat insulated casing ha'iing an entrance opening, a cooking compartment removably arranged within the casing and having an entrance opening registering with the opening in the casino, means for holding the wals of the comartment spaced from the Walls of the ca"- a closure for said openings, means disposed Within the compartment vfor supplying heat thereto, and means disposed within the space between the walls ofthe compartment and casing for also supplying heat to the compartment, there being openings throughv one or more wallso the compartment. Y

12. In aheat retaining cooking apparatus, the combination of a heat insulated casing having an entrance opening, a cooking compartment removably arranged within the casing and having an entrance opening registering with the opening in the casing, means for holding the walls of the compartment spaced from the Walls of the casing, a closure for said openings, means disposed Within the compartment for supplying heat thereto, and means removably disposed within the space between the walls of the compartment and casing for also supplying heat to the compartment, there being openings through one or more walls ofthe compartment.

13. ln a heat retaining cooking apparatus,`

the combination of a heat insulated casing having an entrance opening, a cooking compartment removabiy arranged within the casing and having an entrance opening registering with the yopening in the casing, means for holding the walls of the vcompartment spaced-:trom the weils of the4 casing, aclosure for said openings, means disposed within the compartment or supplying heat thereto, means disposed within the space between the Walls of the compartment and casing for .also supplying heat to the compartment, there beingopenings through Vone or more walls of .theioompartment and means er ,wmfo11iaa'ari1eitiene meansat the combination of a heat insulated casing* having an entrance opening, a cooking coin- -'partment ,removably arranged within thecasing and having an entrance opening reg istering with the opening in the casing, means for hoiding the walls ci the compartment spaced from the walls of the casing, a closure for said openings, means disposed within the compartment for supplying heat thereto, means disposed ,ithin the space between the walls of the compartment and cas-f ing for' also supplying heat to thecompart ment, there being openings through one or more walis ot the compartment, and means exterior of the casing for controiiing the last recited heating means at wiii.

15. ln'a cooking apparatus of the class described, the combination of a casing and a compartment inclosed therein to forni ay space therebetween, there being an entrance opening to the compartment, alclosnre for the compartment.v means tor supplying heat to the compartment, and means for condens ing the vapor 'from the compartment. A

16. ln a cooking apparatus of the cines de scribed, the combination o'' a casing and compartnmentv inclosed therein to form e. space therebetween, there being anl entrance opening to the compartment, a closure in the compartment, means 'for supplying to the compartment, and means exterior the casing for receiving and condensing t vapor from the compartment.

17. 1n a cooking apparatus ofV the ci described, the combination of a eosin and a compartment inclosed therein toy 'orm a space therebetween, there being an entrance opening to the compartment, a closure 1for the compartment,

means ror supplying heat to the compartment, and means having communication with the said space for receiving and condensing the vapor from the compartment.

18. in a cooking apparatus of the class described, the combination of a Casin and a compartment inclosed therein to crm a space therebetween, opening to the compartment, the cmpartmentl to the` compartment, a condenser outside of the casing for condensing the vapor from the compartment, and means forming communication between the said sp condenser for conducting the vapor to the condenser.

19. ln a cooking apparatus of the class described, the combination of a-'casing and a compartment inclosed therein to form a space therebetween, there being an entrance opening to the compartment, a closure for the compartment, means for supplying heat to the compartment, a condenser outside 'olif a closure for the' compartment, and means leading thro there being an entrance means for supplying heat ace and the '3L A. reess cooker consisting of a heat of two subscribing Witnesses, onzths 29th ratainingg-csng, adcooking omparmenf, day of September A D. 1911. an eectx'' eating evc'e, an a con anser 1 m 'for receiving and condensing the vapor FORLSL V DETW'LER from the 'compartmen Wtnesse$z viai@immy whero have signed my J. JOGHUM, Jr., nam@ @o this speccaton, in the presence H. Sismi. 

